封裝管腳圖
產品描述
The SGM803/SGM809/SGM810 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. They provide a reset output during power-up, power-down and brownout conditions. On power-up, an internal timer holds reset asserted for 240ms. This holds the microprocessor in a reset state until conditions have stabilized. The output remains operational with V CC as low as 1V. The SGM803/SGM809 provides an active low reset signal ( ) while the SGM810 provides an active high signal (RESET) output. The SGM809/SGM810 has push-pull outputs, whereas the SGM803 has an open-drain output, which requires an external pull-up resistor.
Eight reset threshold voltage options are available suitable for monitoring 1.8V, 2.5V, 3V, 3.3V and 5V supply voltages.
The reset comparator features built-in glitch immunity, making it immune to fast transients on V CC .
The low supply current of typically 13μA makes the SGM803/SGM809/SGM810 ideal for use in portable, battery operated equipment. All are specified over the extended -40 °С to + 125 °С temperature range.
產品特性
Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V, 5V Options
Superior Upgrade for MAX803/MAX809/MAX810 and ADM803/ADM809/ADM810
Fully Specified over Temperature
Low Power Consumption (13 μ A TYP)
Reset Assertion Down to 1V V CC
150ms Min Power-On Reset
Open-Drain Output (SGM803)
Push-Pull Output (SGM809)
Push-Pull RESET Output (SGM810)
- 40 °С to + 125 °С Operating Temperature Range
Small Packaging
SGM803 Available in SOT-23-3 and SOT-23
SGM809 Available in SOT-23-3 and SOT-23
SGM810 Available in SOT-23-3 and SOT-23